F1 2013 - Wheel Settings List

Steering DeadzoneThe percent of rotation where steering is ignored. The higher this value the more you can move your wheel without it moving your car.

Steering SaturationHow quickly your wheel responds to your movements.

Steering LinearityThe amount of turn of your wheel compared to the amount of wheel turn in game. 100% is a 1:1 mapping.

Throttle DeadzoneThe percent of throttle that is ignored. The higher this value the more you can press on the throttle pedal without applying throttle in game.

Throttle SaturationThe sensitivity of the throttle pedal. Set to a lower value to reduce sensitivity. Helpful if you like to push your throttle down a long way when exiting corners, as a lower sensitivity will reduce wheelspin.

Brake DeadzoneThe percent of brake that is ignored. The higher this value the more you can press on the brake pedal without applying the brake in game.

Brake SaturationThe sensitivity of the brake pedal. Set to a lower value to reduce sensitivity. Helpful if you're applying too much brake and frequently locking.

Threads about specific wheels/controllers and the associated settings: